package com.kun.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Configuration
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
        Object username = request.getSession().getServletContext().getAttribute("userName");
        if (username == null){
            response.sendRedirect( request.getContextPath() + "/error.html");
            return false;
        }
        return true;
//        if (username != null ){
//            return true;
//        }else {
//            //request.setAttribute("msg", "没有权限，请先登录");
//
//            //request.getRequestDispatcher(request.getContextPath() + "/login.html").forward(request,response);
//            return false;
//        }

    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}
